burridge



L. S. BURRIDGE, DECD.

F. o. BURRIDGE. ExEcuToR.

TYPE WRITING MACHINE.

APPLICMION FILED ocr. so. 1911.

Patented July 15, 1919.

STATES LEE S. BUR/RIDGE, DECEASED, LATE OF NEW YORK, N. Y., BY FRANCISO. BURRIDGE,

EXECUTOR` 0F NEW YORK, N. Y.. ASSIGNOR, BY MESNE ASSIGNMENTS, TO UNDER-WOOD TYPEVVRITER COMPANY, OE NEW YORK, N. Y., A CORPORATION 0F DELA-WARE.

1.3io,ooo.

Specification of Letters Patent.

TYPE-WRITING MAoHrNE.

Original application filed September 27, 1915, Serial No. 52,594.Divided and this application filed October To all whom t may concern.'

Be it. known that LEF. S. Brummen, deceased, late a citizen of theUnited States, and lateresiding in the borough of Manhattan, county,city, and State ot New York, invented certain new and usefulImprovements in Type-Writing Machines, of which the following is aspecification.

This invention relates to typewriting machines, and more particularlyt`o means for controlling the margin ot' the work-sheets, especially inconnection with adjustable fingers or devices to hold the work-sheetagainst the platen.

This application is a division of'. pending application No. 52,591,filed September 27, 1915.

According to the present invention, in addition to holding thework-sheet close to the platen, the paper-finger device for one side ofthe sheet has also means to warn the operator when the end of the lineof writing has been reached. `When this finger is adjusted to positionat the side margin of the work-sheet, an alarm device for warning theoperator is simultaneously adjusted therewith.

As matters of further improvement, the paper-guiding fingers, which arestamped from sheet-metal, are loosely mounted upon carriers which areslidably mounted upon a rack which extends from side to side of thetypewriter carriage. yThis rack is made of thin sheet-metal and issecured to a small rail, which, in turn, is secured -to the typewritercarriage frame. The carriers are also stamped from sheet-metal, and eachof them has two bent ears which hook over the rack. The carrier for theright-hand Inargin finger is provided with a projection or Tappet,which, when the typewriter carriage is moved to the left, strikes aclapper and rings a bell which warns the operator that the end of theline has been reached. Each paper-finger and carrier is normally lockedagainst lateral movement by a tooth thereon. which normally extends intoone of the notches of the rack. To free these devices from the rack torlateral movement, a finger-piece is provided upon cach, which, whendepressed, causes the locking tooth thereon to become disengaged fromthe rack. TVhen the finger-piece is depressed shaped plates 16.

Serial No. 199,237.

and moved sidewise toward the desired position, the paper-finger tiltsand binds the carrier.v This binding action causes the locking tooth toremain out of engagement with the rack without the operator maintainingthe downward pressure upon the finger-piece. A spring normally holds thepaper-finger and the locking tooth up in engagement with the rack.

It will be apparent that the paper-finger may also be adjusted along thesupporting rail, without the necessity of first depressing the same tofree its locking tooth from its engagement with said rack. In view ofthe arrangement and cooperative relation of the parts disclosed, thefinger may he adjusted from one pointl to another by merely applying apressure at the end of the paperfinUer in the direction of its movementof adjustment. This will first cause the paperfinger to be slightlyrotated or tilted about one end of its base to such an extent as to freeits locking tooth from the rack, after which a continuation of suchpressure will cause the paper-finger to be moved bodily in its directionof adjustment.

Other features and advantages will hereinafter appear.

In the accompanying drawings,

Figure l is a front view, showing the present invention attached to thetypewriter carriage.

Fig. 2 is a sectional side elevation of the same.

Fig. 3 is a front detail View of the combined margin regulator andmarginal paperfinger.

Fig. 4 is a sectional side elevation, showing the bell and clapper andthe margin regulator.

Type-bars 10 strike upwardly and rearwardly against the front face of aplaten 11, mounted 0n a shaft 12, journaled in the carriage, whichcomprises side plates 13 and transverse rails 14.

The carriage travels in letter-feed and return directions uponball-bearings 15 which are arranged between the rails 14 and Thecarriage is connected by a cord 17 to a spring drum 18.

The carriage escapement mechanism comprises an escapenem wheel 15)connected to a pinion 20 meshing with a carriage rack 21. Dogs 22 arecarried by a rocker 23 eontrolled Iby the keys. From the usual shelf 24the sheets are fed around the platen'll by a roll 25. Springypaper-fingers 26 bear' upon each side-margln of the sheet. They are ofinverted Y-shape, with bent fingerpieces 26a at the upper ends. Eachfinger or clip is carried by a plate 27 (see Fig. 4), which is slidablealong a scale plate 28 for adjustment. The scale plate 28 is carried bya narrower 'bar 29, which, in turn, is secured to the side plates 13 ofthe carriage frame. The paper-fingers 26 extend across the line ofwriting and are curved to conform to the periphery of the platen.

The slidingV carrier in each case has two upstanding guiding andsupporting-fingers 30, which lie against the face of the scale, and arecrimped around vits topedge. The carrier 27 is also turned under thescale and has an offset 30a Fig. 4) behind the lower edge of the same.

A locking tooth 32, extending from a piece 33 which connects the lowerbranches of the paper-finger, eoperates with the teeth of a rack 34provided on the lower edge of. the scale 28.

In order to release the tooth 32, the piece 33 with' the paper-fingers26 is mounted for movement up and down on the carrier 27. The piece 33is turned under the carrier 27 (see Fig. 2), and there has an opening 35through which passes a downwardly-extending finger 36 which is formedfrom part of the carrier. The finger 36 serves as a support for a spring37, the upper end of which bears against the plate 33, and is held by aproj ection38 on the latter. This spring normally holds the finger-plateup against its carrier with the tooth 32 engaging the rack.

To shift a paper-finger across the machine, the finger-piece 26L may bedepressed against the tension of spring 37, disengaging the tooth fromthe rack 34, and freeing the carrier 27. The paper-finger 26 is guidedin this downward movement on the carrier by means of pins 39 mountedupon the carrier and passing through openings 40 on the piece 33. Thepins are of such length as to always lock the finger 26 to the carrierfor longitudinal movement.

When the finger-piece 26a is depressed, it may be slidden along `withthe carrier by a simple push or pull movement, without maintaining,downward pressure on the finger-piece, because of a clamping aotionbetween the paper-finger and the earlier. For this purpose the pins 39are sufficiently loose inthe holes 40 to permit the linger to be tiltedwhen the tooth 32 is out of the rack, until the `part 33 of the finger26 binds with the carrier at such an angle as to keep the tooth 32 fromrenga-ging the raek 34, so long as the push or pull pressure ismaintained upon the finger-piece 26 of the finger 26. When this pressureis released from the paper-finger, the spring 37 causes the part 33 tobe released from the carrier, and the tooth 32 is permitted to againengage the rack 34.

Although the paper-finger may be adjusted from one point to another byfirst depressing the same at the-finger-piece 26a and then moving italong its-support, as above described, it is also capable of being movedfrom one point to another in a. somewhat different manner. ln 'View ofthe arrangement and eoperative relation of vthe parts of the mechanismherein disclosed, the finger may be adjusted by a simple application ofpressure at its end, and in the direction of its movement along itssupport. The effect of such application of pressure would be such as tofirst impart a slight rotation or tilting movement of the paper-fingerin the plane of its movement alongside the platen. T his tiltingmovement would free the tooth 32 from the teeth of the rack 34, afterwhich, on a continuation of such pressure in the same direction, thefinger might be moved to its adj-usted position.

The paper-finger is provided with an index-piece 42 which registers withthe graduations 41 on the scale plate 28.

On the front plate 16 of the platen frame -is a margin alarm or bell43.l A clapper 4-1 is mounted on a pin 45 loosely supported or floatedby a coiled spring 46, which, at one of' its ends, is supported on a pin47 on the rear cross-plate 16 of the platen frame. The clapper pin45`projects through an opening 48 in the front cross-plate 16 of theplaten frame, and lies in the path of a finger 31 on the carrier 27 ofthe right-hand paper-finger.

The carriage spaces step by step across the machine, and when the end ofthe line is reached, the finger 31 first tensions the spring 46, andthen releases the clapper 44, so that the clapper strikes the bell tosound the alarm. From this it will be seen that the time of the sounding'of the alarm is dependent upon the adjustment of the paperfinger forthe right-hand side of the platen, and that it is only necessary for theoperator in setting the fingers" to see that the fingers bear on thework-sheet at the side margins. n

The paper-finger and the Vcombined paperfinger and line-end alarm aresimple and inexpensive to make, both paper-finger and carrier beingstamped from sheet-metal and bent to form. The bell-clapper is alsoinexpensive to make, bein simply a metal sphere through which t e pin 45extends, said pin being fastened to one end of a spring and being thusheld in proper position and free to move in any direction.

Variations may be resorted to within the scope of the invention, andportions of the improvements may be used without others.

llO

' paper-finger on the carrier with the tooth carrier in any adjustedposition along the rail.

2. In a typewriting machine, a platen, a rail extending lengthwise ot'the platen and movable therewith in letter-feed and reverse directions,a marginal paper-linger carrier slidable on said rail, a paper-fingermovable` on said carrier transversely of the rail, a

rack extending lengthwise of the rail and i movable therewith, a toothon the paper- I finger, shiftable into and out of the rack by saidtransverse.movement of the paperlinger, for holding the paper-linger andits carrier in any' adjusted position along the rail, and a spring fornormally holding the 1nI engagement with the rack.

` 3. In a btypewriting machine, a platen, a rail extending lengthwise ofthe platen and movable therewith in letter-feed and reverse directions,a marginal paper-finger carrier slidable on said rail, a paper-lingermovable on said carrier transversely of the rail, a rack extendinglengthwise of the rail and movable therewith, and a tooth on thepapei-finger, 'shiftable into and out of the rack by said transversemovement of the paperfinger, for holding the paper-finger and itscarrier in any adjustable position alongl the rail, the carrier andpaper-finger being in pin-and-slot engagement to. maintain the sameinterlocked for movement together and to guide the paper-finger in itstransverse movements on the carrier.

4. In a typewriting machine, a. platen, a rail extending lengthwise ofthe platen and movable therewith in letter-feed and reverse directions,a marginal paper-finger carrier slidable on said rail. a pa. r-ngermovable on said carrier transversely of the rail, a rack extendinglengthwise ofl the rail and movable. therewith, and a tooth on thepaper-finger, shiftable into and out of the rack by said transversemovement of the paper-finger, for holding the paper-finger and itscarrier in any adjusted position along the rail, the carrier andpaper-finger being 1n pin-and-slot engagement to maintain the sameinterlocked for movement together and to guide the paper-finger in itstransverse movements on the carrier; said a platen, a travelmg carrlagefor type-spac- 130 pin-and-slot engagement .being sufliciently loose topermit the paper-finger to be tiltedon the carrier to be bound therewithwhen the tooth is disengaged from the rack, so that suchI disengagementmay be maintained and the carrier and finger be slid along the `rail bypressure on the paper-finger lengthwise of the rail.

5. In a typewriting machine, a plat-en, a

rail extending lengthwise of the platen and movable therewith inletter-feed and. reverse directions, a marginal paper-finger carrierslidable on said rail, a paper-linger movable on said carriertransversely of the rail, a rack extending lengthwise of the .rail andmovable therewith, a tooth on the paperlinger, shiftable into and out ofthe rack by said transverse movement of the paperfinger, for holding thepaper-finger and its carrier in anyvadjusted position along the rail,and means operable by pressure lengthf wise of the rail for maintainingthe tooth and rack disengaged and for simultaneously sliding the carrieralong the rail.

6. In a typewriter, the combination with a platen, a ltraveling carriagefor typespacing said platen, and a guide-frame for said'l carriagecomprising front and rear carriage-supporting members, of a line-endalarm comprisinga bell mounted between said members, a clapper for saidbell, a support for said clapper, comprising a resilient member securedat one end to .one of said carria e-supporting members and having its cappersupporting end passed through an opening in said bell, aline-enddetermining finger carried by said carriage, and a tappetcarried by said bell-elapper and projecting into the path of saidfinger, so as to be engaged and released thereby to ring said bell whensaid carriage reaches the line-end position determined by the p0- stionof said finger on said carriage.v

' 7. In a typewriter, the combination with a platen, a travelingcarriage for type-spacing said platen, and a guide-frame for saidcarriage comprising front and rear carriage-supporting members, of aline-end alarm comprising a bell mounted between said members, a clapperfor said bell, a support for said clapper, comprising a resil- -ientmember secured at one lend to one of striking distance of said bell, aline-end- 1 determining linger carried by said carriage,

and a tappet carried'by said bell-dapper and proJecting through theopposite carriage-sup' orting member into the path of said finger, so asto be enga ed and released thereb to ring said bel whenksaid carriagereac es the line-end position determined by the position of saidfingero'n said carriage.

8. Ina typewriter, the combination with ing said platen, and aguide-frame for said carriage comprising front and rearcarriage-supporting members, of a line-end alarm comprising a bellmounted between said members and secured lto one of them, a clapper forsaid bell, a support for said clapper, comprising a resilient membersecured at one end to the opposite one of said carriage-supportingmembers and having its dapper-supporting end passed through an opening1n said bell, a line-enddetermining finger carried by said carriage, anda tappet carried by said bell-clapper and projecting into the path ofsaid finger, so as to be engaged and released thereby to ring said bellwhen said carriage reaches the line-end position determined by theposition of said finger on said carriage.

9. The combination, with a platen, of a paper-finger to coperatetherewith, a support for said finger, the mounting .of said finger uponsaid support being such yas to permit said finger to be moved therealonin a direction parallel with the axis of said platen, means forestablishing a locked relation between said finger and said support atany one of a plurahty of positions rela- -tive to said platen, and meansnormally tending to render said locking means effective so asto maintainsaid parts in locked relation when said finger is in any one of` saidpositions, said locking means being rendered ineffective by a tiltingmovement of saidnger in the plane in which it is movable along saidsupport whereby, on application of pressure to the end of said finger inthe direction of its movement from one of .said positions to another, itmay first be tilted to render said locking means inefectifve,and, bycontinued application of such pressure, moved along said support to anadjusted position in which it will again be locked.

l0. Thecombination, with a platen, of a paper-finger to coperatetherewith, a support for said finger, the mounting of said finger uponsaid support being such as to permit said finger to be moved therealongin a plane parallel with the axis of said platen in either direction,means for establishing a locked relation between said finger 4and saidsupport at any one of a plurality of positions'relative to said platen,and means normally tending to render said locking means effective so asto maintain said parts in locked relation when said finger is in any oneof said positions, said locking vmeans being rendered ineffective byeither a clockwise or a counter-clockwise tilting movement of saidfinger in the plane in which it is movable along said. support,

whereby, on application of pressure to the f end of said finger ineither of its two d irections of movement alon sald platen, 1t may Ifirst be tilted to ren er said locking means ineffective, and, bycontinued application of such pressure, moved along said support to anadusted position in' which it will again be loc ed. l

. FRANCIS O. BURRIDGE, E meow/or of the last will and testament of .LeeS. Burwdge, deceased. Witnesses:

EDITH PENRosE, F. GARLAND TUCKER.

